Arc type baby crib with inclined corner seats

ABSTRACT

An arc type baby crib has four inclined corner seats, top tubes, four bases, bottom tubes and upright tubes each being pivotally connected to the inclined corner seat and the base. The top tube is arced and is concave outward. The inclined corner seat is inclined by an angle so that a portion of the inclined corner seat pivotally connected to the upright tube is not perpendicular to a floor. The upright tube is further arced. An inner wall of the inclined corner seat is formed with a land track corresponding to a sliding slot of the upright tube. Thus, the arced top tubes and the arced upright tubes in the baby crib may be firmly and symmetrically combined when the upright tubes under the inclined corner seats are not perpendicular to the arced top tubes.

BACKGROUND OF THE INVENTION

(1) Field of the Invention

The invention relates in general to a baby crib, and more particularlyto an arc type baby crib having horizontal top tubes convex outwards,arc type upright tubes and inclined corner seats so that the inclinedcorner seat makes the top tube and the upright tube be firmly andstrongly combined together when the upright tube under the inclinedcorner seat is not perpendicular to the top tube in the baby crib.

(2) Description of the Prior Art

As shown in FIGS. 1 to 3, a conventional baby crib has four corner seats1, each of which is pivotally connected to a longitudinal top tube 2 anda transversal top tube 3 and is combined with an upright tube 4. Thecorner seat 1 has longitudinal, transversal and vertical directions,which are perpendicular to one another. So, the baby crib looks glassyand is not beautiful, and the pivotal connection between the uprighttube 4 and the corner seat 1 is made through a single rivet 5, which isexposed outside and cannot be glorified.

As shown in FIGS. 2 to 5, another arc type baby crib 10 has arc type toptubes 11 and 12, which are convex outwards, four or two bottom tubes 13which are straight or may be X-shaped tubes, four corner seats 14pivotally connected to the top tubes 11 and the top tubes 12, and fourbases 15 pivotally connected to the bottom tubes 13. An arc type uprighttube 16 is disposed between the corner seat 14 and the base 15, and ajoint 17 is formed at the middle of the top tube 11(12). The joint 17makes the top tube 11(12) be developed to a horizontal state forpositioning, or be retracted to a V-shaped state. A turning connectionshank 18 is disposed at the middle of the bottom tube 13, and makes thebottom tube 13 be developed to a horizontal state for positioning, or beretracted to an inverse-V-shaped state.

The corner seat 14 has a three-way fitting housing assembly on an X-Y-Zcoordinate distribution. Two horizontal pivoting housings 141 and 142are disposed on the X and Y axes, and one pivoting tube 143 extendingvertically and downwards is disposed along the Z axis. Because thelongitudinal top tube 11 and the transversal top tube 12 are arced, theangles of the pivoting housings 141 and 142 (X and Y axes) of the cornerseat 14 are greater than 90 degrees so that the arced top tube 11(12)can be inserted into the pivoting housing 141(142), and the pivotingtube 143 (Z axis) of the corner seat 14 is perpendicular to the floor.

Because the pivoting tube 143 (Z axis) of the corner seat 14 isperpendicular to the floor, the upper portion of the upright tube 16pivotally connected to the corner seat 14 and the lower portion of theupright tube 16 pivotally connected to the base 15 have to be straightportions. So, the middle portion of the upright tube 16, which may bearced, is short so that the upright tube 16 cannot be sufficientlyarced. In addition, the upright tube 16 is pivotally connected to thecorner seat 14 through a single rivet, which is exposed outside andcannot be glorified.

U.S. Pat. No. D494,393 discloses an arc type baby crib havinglongitudinal top tubes and transversal top tubes and a corner seat. Apivoting tube of the corner seat is perpendicular to the floor. Althoughthe top tubes are arced, only the shorter top tubes are convex upwardsand the longer top tubes are convex downwards. Thus, the top tubes areconvex upwards and downwards and the exterior of the baby crib is notsymmetrical and cannot be glorified.

U.S. Pat. No. D448,218 discloses a baby crib having arced upright tubesand straight top tubes, so the baby crib cannot be named as an arc typebaby crib.

U.S. Pat. No. 6,859,957 discloses an arc type baby crib having fourcorner seats pivotally connected to straight top tubes, four basespivotally connected to straight bottom tubes, and arc type upright tubeseach disposed between the corner seat and the base. The arc type uprighttube is not really arced but has two straight upper and lower portionsto be pivotally connected to the corner seat. So, the exterior of thebaby crib is not symmetrical.

The common feature of the arc type baby crib and the typical baby cribis that the pivoting tube (Z axis) under the corner seat isperpendicular to the floor, or the angles of two horizontal pivotingtubes (X and Y axes) of the corner seat of the arc type baby crib aregreater than 90 degrees.

SUMMARY OF THE INVENTION

It is therefore an object of the invention to provide an arc type babycrib including inclined corner seats, horizontal and arc type top tubesand more arced upright tubes so that the arc type baby crib issymmetrical and the top tube and the upright tube are combined with theinclined corner seat symmetrically.

Another object of the invention is to provide an arc type baby cribhaving inclined corner seats, wherein the inclined corner seat can becombined with an upright tube firmly when the upright tube under theinclined corner seat is not perpendicular to the top tube.

The invention achieves the above-identified object by providing an arctype baby crib having inclined corner seats. The baby crib has fourinclined corner seats and four horizontal top tubes, four lower basesand a plurality of horizontal bottom tubes. An upright tube is pivotallyconnected to the inclined corner seat and the base. The inclined cornerseat is pivotally connected to the top tube. The top tube is arced andhas a joint at a middle thereof, and the upright tube is arced. Theinclined corner seat is inclined by an angle toward a center of the babycrib so that a portion of the inclined corner seat pivotally connectedto the upright tube is not perpendicular to a floor, the top tube has astraight end portion inserted into and pivotally connected to theinclined corner seat. An inner wall of the inclined corner seat isformed with a land track corresponding to a sliding slot of the uprighttube. A more arced upright tube is formed so that the arc type baby cribcan be fabricated according to an inclined angle of the inclined cornerseat. The inclined corner seat makes the top tube and the upright tubebe firmly and strongly combined together through the land track and thesliding slot when the upright tube under the inclined corner seat is notperpendicular to the top tube.

Further aspects, objects, and desirable features of the invention willbe better understood from the detailed description and drawings thatfollow in which various embodiments of the disclosed invention areillustrated by way of examples.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a pictorially schematic illustration showing an exterior of acorner seat of a conventional baby crib.

FIG. 2 is a schematic front view showing a conventional arc type babycrib.

FIG. 3 is a schematic top view showing the conventional arc type babycrib.

FIG. 4 is a schematic front view showing the conventional arc type babycrib that is retracted.

FIG. 5 is a schematic top view showing the conventional arc type babycrib that is retracted.

FIG. 6 is a pictorially exploded view showing an inclined corner seat,top tubes and an upright tube according to the invention.

FIG. 7 is a pictorially assembled view showing an exterior of the babycrib according to the invention.

FIG. 8 is a pictorially exploded view showing the inclined corner seatand the upright tube according to the invention.

FIG. 9 is a schematic view showing an assembled cross-section of theinclined corner seat and the upright tube.

FIG. 10 is a schematic front view showing the baby crib of theinvention.

FIG. 11 is a schematic top view showing the baby crib according to theinvention, wherein the viewing angle is rotated by 90 degrees.

FIG. 12 is a schematic side view showing the retracted baby cribaccording to the invention.

FIG. 13 is a schematic top view showing the baby crib that is retracted,wherein the viewing angle is rotated by 90 degrees.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

First, an arc type baby crib 20 having inclined corner seats accordingto the invention is illustrated in FIGS. 6 to 12. The baby crib 20 hasfour inclined corner seats 21 disposed at four corners of the top of thebaby crib 20. The inclined corner seat 21 has two upper pivotinghousings 211 and 212 and a lower pivoting tube 213 to constitute anX-Y-Z coordinate distribution. The lower pivoting tube 213 (Z axis) isnot perpendicular to the floor, and has a bottom, which is slightlyshifted outward so that the inclined corner seat 21 is inclined by anangle toward a center of the baby crib 20. Two pivoting housings 211 and212 are pivotally connected to a set of top tubes 22 and 23,respectively, so that the top tubes 22 and 23 are arranged to form twotransversal top tubes 22 and two longitudinal top tubes 23. Thetransversal and longitudinal top tubes 22 and 23 are arced. A joint 24is formed at a middle of each of the top tubes 22 and 23. The lowerpivoting tube 213 is pivotally connected to an upright tube 25, which isarced, as shown in FIGS. 8 and 9. An inner wall of the inclined cornerseat 21 is formed with a land track 214 corresponding to a sliding slot251 of the upright tube 25. Resisting ends 215 extending outward aredisposed on two sides of the land track 214 of the inclined corner seat21, and pushing ends 252 corresponding to the sliding slot 251 of theupright tube 25 so that the pushing end 252 is restricted within theresisting end 215. Two combination posts 216 penetrate through theinclined corner seat 21 and the upright tube 25 so that the innersurface of the inclined corner seat 21 is combined and positioned withthe upright tube 25.

Four bases 26 are provided at the bottom of the baby crib 20, andseveral bottom tubes 27 including two parallel tubes or rectangularcombination of tubes or X-shaped tubes are provided. The top of the base26 is pivotally connected to the upright tube 25 so that the uprighttube 25 is pivotally connected to and between the inclined corner seat21 and the base 26. The top tube 22(23) has a straight inserting endportion 221(231) pivotally connected to the inclined corner seat 21. Thepivoting tube 213 under the inclined corner seat 21 is not vertical butis perpendicular to the pivoting housings 211 and 212 of the inclinedcorner seat 21. In addition, the transversal top tubes 22 and thelongitudinal top tubes 23 are disposed horizontally and are convexoutwards. The joint 24 makes it possible to develop the top tube 22(23)to a horizontal state for positioning, or to retract the top tube 22(23)to a V shape. A turning connection shank 28 is disposed at the middle ofthe bottom tube 27 so that the bottom tube 27 can be developed to ahorizontal state or may be retracted to an inverse-V-shape.

According to the above-mentioned combined structure, the inclined cornerseat for the arc type baby crib according to the invention is mainlyinclined inward so that the upright tube 25 can be further arced. Also,the land track 214 of the inclined corner seat 21 is combined with thesliding slot 251 of the upright tube 25 so that the assembled structureis reinforced. Although the pivoting tube 213 under the inclined cornerseat 21 does not extend in a vertical direction, the assembled structurestill can be reinforced because the land track 214 and the sliding slot251 can be combined firmly.

When the pivoting housings 211 and 212 of the inclined corner seat 21are perpendicular to each other, the top tubes 22 and 23 that are convexoutwards can be utilized. So, it is unnecessary to manufacture theinclined corner seat with two pivoting housings defining an angle largerthan 90 degrees. In addition, the inclined corner seat 21 is inclinedinward, and the top tube 22(23) has the straight inserting end portion221(231) to be pivotally connected to the inclined corner seat 21. Thus,when the baby crib 20 is retracted, the joints 24 of the top tubes 22and 23 can be rotated so that the top tubes 22 and 23 are bent downward.Although the top tubes 22 and 23 are convex outwards, the joints 24 ofthe top tubes 22 and 23 extend vertically downward without being shiftedinward. So, when the top tubes 22 and 23 having the joints 24 are foldeddownward, the top tubes 22 and 23 cannot be blocked by theinverse-V-shape bottom tube 27 that is folded. Thus, the inclined cornerseats 21 can be smoothly moved alongside, as shown in FIGS. 12 and 13,so that the volume of the retracted or folded baby crib 20 is reduced.

The arced top tubes 22(23) are disposed horizontally and symmetricallyand are convex outwards. Also, the upright tube 25 is significantlyarced and does not approach an upright tube. The provision of theinclined corner seat 21 can solve the problem of the insufficientcurvature of the upright tube 25. Although the inclined corner seat 21does not extend downward and vertically and the upper half portion ofthe upright tube 25 is not an upright tube, the invention still canreinforce the assembly of the land track 214 and the sliding slot 251without loose and shaking conditions.

New characteristics and advantages of the invention covered by thisdocument have been set forth in the foregoing description. It is to beexpressly understood, however, that the drawings are for the purpose ofillustration only and are not intended as a definition of the limits ofthe invention. Changes in methods, shapes, structures or devices may bemade in details without exceeding the scope of the invention by thosewho are skilled in the art. The scope of the invention is, of course,defined in the language in which the appended claims are expressed.

1. An arc type baby crib, the baby crib having four inclined cornerseats and four horizontal top tubes, four lower bases and a plurality ofhorizontal bottom tubes, wherein an upright tube is pivotally connectedto the inclined corner seat and the base, the inclined corner seat ispivotally connected to the top tube, the top tube is arced, the top tubehas a joint at a middle thereof and the upright tube is arced, whereinthe inclined corner seat is characterized in that: the inclined cornerseat is inclined by an angle toward a center of the baby crib so that aportion of the inclined corner seat pivotally connected to the uprighttube is not perpendicular to a floor, the top tube has a straight endportion inserted into and pivotally connected to the inclined cornerseat, an inner wall of the inclined corner seat is formed with a landtrack corresponding to a sliding slot of the upright tube, a more arcedupright tube is formed so that the arc type baby crib can be fabricatedaccording to an inclined angle of the inclined corner seat, and theinclined corner seat makes the top tube and the upright tube be firmlyand strongly combined together through the land track and the slidingslot when the upright tube under the inclined corner seat is notperpendicular to the top tube.
 2. The arc type baby crib according toclaim 1, wherein resisting ends extending outward are formed on twosides of the land track of the inclined corner seat, and pushing endscorresponding to the resisting ends are formed in the sliding slot ofthe upright tube so that the pushing ends are restricted within theresisting ends, respectively.
 3. The arc type baby crib according toclaim 1, wherein an inner surface of the inclined corner seat iscombined with the upright tube by at least one combination postpenetrating through the inclined corner seat.
 4. The arc type baby cribaccording to claim 1, wherein the inclined corner seat has two pivotinghousings pivotally connected to the top tubes, and the pivoting housingsare perpendicular to each other.
 5. The arc type baby crib according toclaim 1, wherein the top tubes are disposed on one horizontal plane whenthe top tubes are developed.